@incollection{AST_2001__272__173_0,
     author = {Porti, Joan and Heusener, Michael},
     title = {Appendix {A.} {Limit} of hyperbolicity for spherical $3$-orbifolds},
     booktitle = {Geometrization of $3$-orbifolds of cyclic type},
     series = {Ast\'erisque},
     pages = {173--178},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {272},
     year = {2001},
     mrnumber = {1844891},
     zbl = {0971.57004},
     language = {en},
     url = {http://archive.numdam.org/item/AST_2001__272__173_0/}
}